Conceit is one of the last fetters to be extinguished as one becomes and arhant. In other words, only an Arahant is completely free from conceit.
Therefore, it appears illogical Buddhist rules would be "free from conceit" when it appears logical rules are not required for Arahants.
For example, while often giving dodgy teachings, in AN 4.159, Ananda says: "By relying on conceit that conceit is to be abandoned".
While MN 8 begins with the statement "self-views" are abandoned when any object is viewed with right wisdom, it appears MN 8 appears to not directly include the abandoning of "conceit" in its list of 44 practises. Also, MN 8 appears to contain many very low or basic levels of instruction which could easily give rise to conceit in a non-Arahant, such as:
(44) Others will misapprehend according to their individual views,
hold on to them tenaciously and not easily discard them; we shall not
misapprehend according to individual views nor hold on to them
tenaciously, but shall discard them with ease — thus effacement can be
done.
AN 10.48 is about the Dasadhamma, namely, ten daily reflections of a monk, as follows:
"'I am now changed into a different mode of life (from that of a layman).' This must be reflected upon again and again by one who has
gone forth.
"'My life depends on others.' This must be reflected upon again and again by one who has gone forth.
"'I must now behave in a different manner.' This must be reflected upon again and again by one who has gone forth.
"'Does my mind upbraid me regarding the state of my virtue?' This must be reflected upon again and again by one who has gone forth.
"'Do my discerning fellow-monks having tested me, reproach me regarding the state of my virtue?' This must be reflected upon again
and again by one who has gone forth.
"'There will be a parting (some day) from all those who are dear and loving to me. Death brings this separation to me.' This must be
reflected upon again and again by one who has gone forth.
"'Of kamma I am constituted. Kamma is my inheritance; kamma is the matrix; kamma is my kinsman; kamma is my refuge. Whatever kamma I
perform, be it good or bad, to that I shall be heir.' This must be
reflected upon again and again by one who has gone forth.
"'How do I spend my nights and days?' This must be reflected upon again and again by one who has gone forth.
"'Do I take delight in solitude?' This must be reflected upon again and again by one who has gone forth.
"'Have I gained superhuman faculties? Have I gained that higher wisdom so that when I am questioned (on this point) by fellow-monks at
the last moment (when death is approaching) I will have no occasion to
be depressed and downcast?' This must be reflected upon again and
again by one who has gone forth.
It appears obvious the above Dasadhamma, assuming for non-Arahants, could easily give rise to conceit; such as monks believing they are different to and superior to laypeople.
In summary, there appears nothing in MN 8 that shows all, many or some of the 44 practices described in MN 8 would prevent the arising of conceit.
In other words, it appears the opinion below is unsubstantiated and probably incorrect:
Some rules assume the conceit, "I am". Importantly, Buddhist rules do
not.